Pattern-roll for paper-machines.



PATENTED DEC. 3, 1907.

0. HAMMER. PATTERN ROLL FOR PAPER MACHINES.

APPLIOATION FILED APR. 26, 1907- WiF e m" pattern to be'impressed on the card-board formed in the rolls, 'lhis renders the changing ot the covers dlthcult and also has the UNITED OSKMI l'LUDiER', O1 MAHLI'lWSC-ll, GERMANY.

Mahlitzsch, Post Niederstriegis, in Saxony. Germany, have invented a certa n new and which the lolowing is a specification.

pattern is defaced at the soldered-joints, so that on portions of the card-board the pat portions must be removed when the cardboard is used for the manufacture of arm l upon them, the opposite edge of the covers PA LENT OFFICE.

PATTERN-ROLL FOR PaPER-MAo'HmEs.

subject of the King of Saxony, residing at useful Pattern-Roll for Paper-3lachines, of

In the known pattern rolls used in eard board or paper machines and having on their'surtaces die-covers of material perineableto air (usually w re-gauze), to enable a simultaneously with the pressing of the latter, the covers are fastened to the rolls'by soldering theiredges in longitudinal grooves still more-important disadvantage that the tern is not distinctly i1'npressed,:and these such as beer-glass trays and the like.

According to the present invention the cover .is fastened to the roll by means of clamping bars adapted to be fixed into longi-" tudinal grooves'by means'oi screws, so that the pattern can be easily changed and that an impression-of uniform distinetness is produced by .all parts or the cover. In most cases a single roll presses two pieces of cardboard, so that two covers .must be used. These can be fastened to the roll by placing one'edge of car-.li-cover over a longitudinal groove and pressing the said edges into the groove by means oi a clamping bar placed being thereupon pressed into another groove in the same manner. The die-covers are cut Specification of Letters Patent. caticn filed April 26.1907. Serial No. 370.496.

or perforated to givepassage to the screws.

Patented. Dec. 3, 190:.

1 construct ion jen hodving the invention is illustrated in the annexed drawing, in which Figures 1 and 2 are sections of the fastening device. in ditl'ercntplanes; Fig. 3 is a partial plan-view and Fig. .4 a cross section of the pattern roll. v

The pattern roll (t is provided with two thickened parts I) diametrically opposite each other. In each part I) there is a longitudinal groove (l into which a clamping bar 9 fits loosely, so that when portions of the covers I) are pressed into the groove by the bar the groove is tilled- The bars I are provided with ,longitudinal grooves lc which indicate where the cardboard is to he cut. The slots in the heads of the fastening screws or bolts 8 .borrespoml with the grooves I." so that the latterarel not interruptcd by the said heads. If the grooves (l and bars g are. made wedge- *shapod the covers it need not pass under- 'neath the barsbut will be held by friction at tl'iej sides ofthe grooves (I. i .i/Vhat I claim as my invention and desire-- to se-ourc'by Letters Patent of the United States is: p

A pattern roll for cardboard or paper inachinesthaving inits surface ,a lol igitudinal groove in combination with a pattern adapted to engage said groove, a bar for holding the pattern in said groove, and screws [or attaelnnent of said bar to the roller, the bar having a longitudinal slot and the screw heads ha'vingtheir slots alined with that ol' the bar.

- in witness whereof I have signed this specification in the presence ol' two witnesses.

' ()SKAR ll.\. l.\llllt. itnesses:

lll-YRM. TASK, ltLfnoLrn l mcnn 

